Quick Answer

Question: Are 2003 5.9 Cummins good engines?

If you don’t consider the fuel system, the 5.9 Cummins is a very reliable engine. The internal parts like the pistons, rods, and crank will last for a zillion miles even with some abuse. The turbos are very responsive and will give a long service life, but they don’t have a tremendous horsepower potential.

How much HP does a 03 Cummins have?

2003 3rd generation Cummins trucks produce 305 horsepower and 555 lb-ft of torque.

Is a 2003 Cummins common rail?

For the 2003 model year, the Cummins was introduced with Bosch high pressure common rail fuel injection, again increasing power output. The 2003 rating for the Dodge truck was released at 305 horsepower and 555 foot-pounds.

How much horsepower does a 2003 5.9 Cummins have?

5.9L, 6.7L Cummins Horsepower & Torque By Model Year

Model Year Rated Horsepower
2003 Standard: 235 hp @ 2,700 rpm
High Output: 305 hp @ 2,900 rpm
2004 Standard: 305 hp @ 2,900 rpm
California only: 235 hp @ 2,700 rpm

What year 5.9 Cummins is best?

1994-1998 2500 &amp
3500

As far as performance potential goes, it doesn’t get any better than the mechanical P7100 equipped versions of the 12-valve 5.9L Cummins. They’re simple, rock-solid reliable, and can easily tick off a half a million miles if properly maintained.

How many miles will a Cummins 5.9 last?

The Cummins brand is extremely reliable and prides itself on long-lasting engines. The 5.9-liter engine can expect to churn out 300,000 to 400,000 miles.

Is 5.9 or 6.7 Cummins better?

To sum up, the more simplistic 5.9 fixed geometry turbo means that while it tends to be more reliable, the more advanced 6.7 variable geometry turbo gives better performance. The Exhaust Brake is a big part of why the 6.7 Cummins is such a powerful towing machine.

Is the 48RE a good transmission?

Registered. The main weak spots, in general, of the 48RE are: line pressure, torque converter and the input shaft due to it’s locked 3-4 shift. Other than those, they’re a pretty good towing transmission.

How much boost does a 5.9 Cummins make?

On 1998.5-2004 5.9L Cummins you will need to physically modify your wastegate to gain more turbo boost. Doing this without the Boost Fooler will result in check engine lights and codes set into the computer. Stock 98-04 trucks should generate 18-23psi of boost pressure stock (depending on year model).

How reliable are 5.9 Cummins?

Outside of the fuel system, the 5.9 24v is a very reliable engine. The engine internals such as the pistons, rod, and crankshaft will last a lifetime and can hold up beyond 500,000 miles. Outside of the fuel system components, you should expect to replace common items like water pumps, hoses, belts, etc.

What turbo is on a 2003 Cummins?

S475 TWIN TURBO FOR DODGE CUMMINS 2003-2007 5.9L CR.

How much HP can a 5.9 Cummins handle?

The 5.9L inline-six mill’s factory rotating assembly from ’89 to ’02 is capable of handling 800 hp (1,400 to 1,600 lb-ft of torque) without breaking a sweat, and is often pushed into four-digit territory before aftermarket rods become a consideration.

What is the fuel mileage for a 5.9 Cummins?

We own five Dodge 4×4 pickups with the 5.9L Cummins, and we are thrilled with all the trucks. All five trucks we own average 29 MPG highway, and 24 MPG in town. Cummins 5.9L has the fuel economy, speed, and the power to pull.

How can I get more horsepower out of my 5.9 Cummins?

By feeding more fuel into this massively-compressed engine, it’s only natural that you can unlock more power. Though, you can still out-do the factory turbo by adding too much fuel. With the 5.9 Cummins, 50-hp or 75-hp injectors are about the maximum injector size with the factory turbo.

What size turbo is on a 5.9 Cummins?

The turbo features a custom profile, 64mm (actual measurement 63.5mm) billet wheel perfectly mapped to a modified compressor cover and 65mm, 10-blade turbine inside the HE531’s 9cm housing. The Cummins Stealth 64 is one of the quickest spooling turbo’s we have tested for the 5.9L Cummins.

Is 24v better than 12v Cummins?

In summary, those looking to keep things stock or modest the 24v is the better street engine. If you’re looking for extreme power and performance the older 12v Cummins engine is likely the better choice.

What year Cummins is most reliable?

2007

  • #1 Best Year: 2019 Dodge Cummins.
  • #2 Best Year: 2018 Dodge Cummins.
  • #3 Best Year: 2020 Dodge Cummins.
  • #4 Best Year: 2017 Dodge Cummins.
  • #5 Best Year: 1989 Dodge Cummins.
  • #6 Best Year: 1990 Dodge Cummins.
  • #7 Best Year: 1994 Dodge Cummins.
  • #8 Best Year: 1995 Dodge Cummins.

What is the most reliable Cummins engine?

The most reliable diesel engine ever made was the 5.9L Cummins 12-Valve 6BT. The 5.9L 12-Valve has million-mile durability. It came factory with a 230hp, 440lb/ft of torque and an inline P7100 injection pump.

What year Cummins has 53 block?

The Cummins “53” Block was used in Cummins 24 valve ISB diesel engines from 1998.5-2002. Manufactured by Brazilian company, TUPY.

How often should you change oil in a 5.9 Cummins?

04′ 5.9 Cummins

One is through Dodge for the powertrain
7 years or 70,000 miles. The motor had a second warranty for 7 years or 100,000 miles and they would warrant the motor with an oil change interval of 15,000 miles.

What is high mileage on a Cummins diesel?

Like the Duramax, Cummins diesel engines can be expected to last a long time. Between 350,000 and 500,000 miles is usually considered high mileage on a Cummins diesel.

What is a 12v Cummins?

The 12-valve Cummins, officially the Cummins 6BT, is the engine at the bottom of the family tree of diesel engines (at least in pickup trucks). Its simple, straightforward design is a symbol of reliability, solid engineering and tractor-style torque.

How much HP does a 7.3 diesel have?

7.3L Power Stroke Specs

Engine: 7.3L Power Stroke diesel V-8
Peak Horsepower: • 210 hp @ 3,000 rpm (intro horsepower rating, 1994 MY) • 275 hp @ 2,800 rpm (peak horsepower rating, 2003 MY)
Peak Torque: • 425 lb-ft @ 2,000 rpm (intro torque rating, 1994 MY) • 525 lb-ft @ 1,600 rpm (peak torque rating, 2003 MY)

Are all Cummins 6 cylinder?

The Cummins corporation actually made the engines for the Chrysler corporation bda Dodge and Ram companies. All these Cummins diesel engines are inline 6 cylinders. You can find these Cummins engines in many Dodge Ram 2500, 3500, 4500 and 5500 truck models.

What is the difference between 47RE and 48RE?

47RE: An electronically controlled four-speed automatic transmission found in ’96 to ’02 Dodge trucks, as well as some ’03 models. 48RE: An electronically controlled four-speed automatic transmission found in ’03 to’07 Dodges.

What year did the 48RE start?

Chrysler 48RE Specs

Transmission: Chrysler 48RE
Predecessor: 47RE
Model Years/Applications: 2003 – 2007 Dodge Ram 2500/3500
Case Material: Aluminum
Max Input Torque: 560 – 570 lb-ft (Chrysler strength designation “8”)

How many gears are in a 48RE?

Registered. The 48re is a 4 speed. The only thing you can do would be to put an over/under on it.

How much boost does a stock 06 5.9 Cummins make?

Stock boost is 32 and backs down to 28.

How do you increase turbo boost on a diesel?

Diesel Insights: Does More Boost = More Power?

How much boost does a stock 12 valve Cummins have?

Stock you won’t see much more than 25psi. Depending on the turbo you currently have you don’t want to run above 32-35psi.